Answer:
You multiply or divide by 10 conveniently
Step-by-step explanation:
For the first expression, remember that
[tex]1.62 \div 0.8 = \frac{1.62}{0.8} = \frac{1.62}{0.8}\frac{10}{10} = \frac{16.2}{8}\\\\1.62 \div 0.8 = \frac{1.62}{0.8}= \frac{1.62/100}{0.8/100} = \frac{0.0162}{0.008}[/tex]